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fs/procfs: add mempool info to proc/mempool

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server> cat /proc/mempool
                   total    bsize    nused    nfree   nifree  nwaiter
       hello:        400       20       17        3        0        0

Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong
2022-07-29 04:17:14 +00:00
committed by Xiang Xiao
parent e3bbbfe4d0
commit c18b5602e8
6 changed files with 413 additions and 4 deletions
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mm/mempool/mempool.c
+57 -2
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@@ -53,6 +53,7 @@ static inline void mempool_add_list(FAR sq_queue_t *list, FAR void *base,
*
* Input Parameters:
* pool - Address of the memory pool to be used.
* name - The name of memory pool.
* bsize - The block size of memory blocks in pool.
* ninitial - The initial count of memory blocks in pool.
* nexpand - The increment count of memory blocks in pool.
@@ -66,8 +67,9 @@ static inline void mempool_add_list(FAR sq_queue_t *list, FAR void *base,
*
****************************************************************************/
int mempool_init(FAR struct mempool_s *pool, size_t bsize, size_t ninitial,
size_t nexpand, size_t ninterrupt)
int mempool_init(FAR struct mempool_s *pool, FAR const char *name,
size_t bsize, size_t ninitial, size_t nexpand,
size_t ninterrupt)
{
size_t count = ninitial + ninterrupt;
@@ -102,6 +104,10 @@ int mempool_init(FAR struct mempool_s *pool, size_t bsize, size_t ninitial,
nxsem_init(&pool->wait, 0, 0);
nxsem_set_protocol(&pool->wait, SEM_PRIO_NONE);
#ifndef CONFIG_FS_PROCFS_EXCLUDE_MEMPOOL
mempool_procfs_register(&pool->procfs, name);
#endif
return 0;
}
@@ -227,6 +233,51 @@ void mempool_free(FAR struct mempool_s *pool, FAR void *blk)
}
}
/****************************************************************************
* Name: mempool_info
*
* Description:
* mempool_info returns a copy of updated current mempool information.
*
* Input Parameters:
* pool - Address of the memory pool to be used.
* info - The pointer of mempoolinfo.
*
* Returned Value:
* OK on success; A negated errno value on any failure.
****************************************************************************/
int mempool_info(FAR struct mempool_s *pool, FAR struct mempoolinfo_s *info)
{
irqstate_t flags;
if (pool == NULL || info == NULL)
{
return -EINVAL;
}
flags = spin_lock_irqsave(&pool->lock);
info->ordblks = sq_count(&pool->list);
info->iordblks = sq_count(&pool->ilist);
info->aordblks = pool->nused;
info->arena = (pool->nused + info->ordblks + info->iordblks) * pool->bsize;
spin_unlock_irqrestore(&pool->lock, flags);
info->sizeblks = pool->bsize;
if (pool->nexpand == 0)
{
int semcount;
nxsem_get_value(&pool->wait, &semcount);
info->nwaiter = -semcount;
}
else
{
info->nwaiter = 0;
}
return 0;
}
/****************************************************************************
* Name: mempool_deinit
*
@@ -251,6 +302,10 @@ int mempool_deinit(FAR struct mempool_s *pool)
return -EBUSY;
}
#ifndef CONFIG_FS_PROCFS_EXCLUDE_MEMPOOL
mempool_procfs_unregister(&pool->procfs);
#endif
while ((blk = sq_remfirst(&pool->elist)) != NULL)
{
kmm_free(blk);